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无变压器光伏逆变器拓扑对功率器件选择的鲁棒性分析

Analysis of the Robustness of Transformerless PV Inverter Topologies to the Choice of Power Devices

语言:

中文摘要

无变压器光伏逆变器因体积小、重量轻被广泛应用于单相光伏系统。由于缺乏电网侧隔离,需通过优化调制技术和基础拓扑来抑制直流分量及漏电流。本文对不同拓扑在功率器件选择上的敏感性进行了分析,旨在提升系统性能与可靠性。

English Abstract

Transformerless topologies are employed in single-phase photovoltaic inverter converters due to their small size and low weight. Avoiding the grid-side transformer requires the modulation technique and the basis topology to be accordingly changed in order to mitigate dc current components in the grid side and the leakage current to ground. This paper carries out a sensitivity analysis of the selec...
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SunView 深度解读

该研究直接关联阳光电源的核心产品线——户用及组串式光伏逆变器。在无变压器拓扑中,漏电流抑制与直流分量控制是提升产品安全性和电网适应性的关键。通过对功率器件(如SiC/GaN等宽禁带半导体)与拓扑鲁棒性的敏感性分析,可指导阳光电源研发团队在设计阶段优化硬件选型,降低损耗并提升功率密度。建议将分析结论应用于新一代户用逆变器开发,以进一步优化EMI性能,并为iSolarCloud平台提供更精准的故障诊断数据支撑。